society > morality > moral evil > moral or spiritual degeneration > degrading or impairing morally > degrade or impair morally [verb (transitive)] > make hellish (3)
transitive. Of a demon: to possess (a person or animal). Usually in passive.
transitive. To render infernal; to imbue with a hellish disposition or character.
transitive. To represent as extremely wicked, cruel, or diabolical; to demonize.